2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 320Get this manual

CYLINDER HEADVALVE Grease the cotters to ease installation
Install the cotters using the valve spring compressorATTACHMENT To prevent loss of tension, do not compress the valve spring more than necessaryTOOLS: Valve spring compressor Spring compressor attachment 07757-0010000 07959-KM30101

COTTERS

VALVE SPRING COMPRESSOR
Support the cylinder head so the valve head will not contact anything that may cause damage
Tap the valve stems gently with two plastic hammers as shown to seat the cotters firmly

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